Dpreview had a chat with Panasonic engineers and here are some info:
Panasonic 10-25mm f/1.7:
We’re developing the 10-25mm F1.7 lens for Micro Four Thirds, that’s coming soon.
MFT verus S lenses:
Compared to MFT lenses the new S lenses have a newly-developed double focus system and an ultrasonic assist system
About the MFT and S system development:
of course we are developing both S-series and G-series at the same time. We have optimized our human resources internally so that we can develop both S series and G series to the highest standard.
About a possible video oriented S camera:
In the future, we’d like to consider the users’ needs: it’s open to users’ feedback.
MFT vs S when it comes to video:
Image stabilization and overheating will be less of an issue, compared to full-frame sensors.
Dpreview editors got the impression that “For now, at least, it seems that Panasonic sees the GH series as its main video/stills camera platform.”
Time to get the new GH6 folks :)